Description
Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.
Published: 2026-10-01
Score: 4.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Machine‑account credential compromise
Action: Apply Patch
AI Analysis

Impact

The BoKS Server Agent contains a flaw in its adjoin utility that produces machine‑account passwords with lower-than‑expected entropy. A predictable password generation algorithm can let a threat actor infer a generated password if the approximate time of creation is known. Compromised machine‑account passwords could be used to authenticate against Active Directory or local systems, potentially giving an attacker elevated privileges or allowing lateral movement across a network.

Affected Systems

Fortra’s Core Privileged Access Manager (BoKS) Server Agent is affected in any release older than 8.1.0.29 for the 8.x line or 9.0.0.5 for the 9.x line. Users deploying those versions should assess whether machine‑account passwords were generated during Active Directory join or auto‑renewal before the vulnerability was addressed.

Risk and Exploitability

The CVSS score of 4.8 indicates moderate severity. Although the EPSS score is not available and the vulnerability is not in the KEV catalog, the flaw can still be leveraged by an adversary who can approximate the time a password was issued, such as a user or script that forces an adjoin or renewal operation. Because the weakness is limited to password entropy, the primary risk is credential compromise rather than remote code execution; however, gaining a valid machine account can lead to significant privilege escalation within the domain.

Generated by OpenCVE AI on October 1, 2026 at 18:21 UTC.

Remediation

Vendor Solution

Upgrade to a fixed boks-client release newer than 8.1.0.29 or 9.0.0.5, then rotate machine-account passwords generated by affected versions.


Vendor Workaround

Until fixed builds are deployed, avoid running adjoin join or autoupdate operations from affected versions. If automatic machine-account password renewal is enabled, disable it temporarily or ensure renewed passwords are rotated again after upgrading to a fixed version.


OpenCVE Recommended Actions

  • Update to a fixed Fortra BoKS Server Agent release newer than 8.1.0.29 or 9.0.0.5 and rotate any machine‑account passwords that were generated by affected versions.
  • Disable automatic machine‑account password renewal or refrain from executing adjoin join or auto‑update actions on the affected system until the upgrade and password rotation are completed.
  • After the upgrade, rotate all machine‑account passwords that were generated by versions prior to the fix to eliminate any passwords that may have been predictable.

Generated by OpenCVE AI on October 1, 2026 at 18:21 UTC.

Tracking

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Advisories

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History

Thu, 01 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Fortra
Fortra core Privileged Access Manager (boks)
Vendors & Products Fortra
Fortra core Privileged Access Manager (boks)

Thu, 01 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
Description Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.
Title Fortra BoKS Server Agent adjoin machine-account password generation vulnerability
Weaknesses CWE-338
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

Fortra Core Privileged Access Manager (boks)
cve-icon MITRE

Status: PUBLISHED

Assigner: Fortra

Published:

Updated: 2026-10-01T16:16:15.483Z

Reserved: 2026-05-28T16:37:54.270Z

Link: CVE-2026-9864

cve-icon Vulnrichment

Updated: 2026-10-01T16:16:10.345Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-01T16:18:09.417

Modified: 2026-10-01T20:34:26.287

Link: CVE-2026-9864

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T18:30:11Z

Weaknesses
  • CWE-338

    Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)